Bosch A4VG A4VG 32 Series Instruction Manual page 46

46/68 Installation
Table 11: Tightening torques for female threads and threaded plugs
Ports
Standard Thread size
DIN 3852 M8 × 1
M10 × 1
M12 × 1.5
M14 × 1.5
M16 × 1.5
M18 × 1.5
M22 × 1.5
M26 × 1.5
M27 × 2
M33 × 2
M42 × 2
M48 × 2
ISO 11926 5/16-24 UNF-2B
3/8-24 UNF-2B
7/16-20 UNF-2B
9/16-18 UNF-2B
3/4-16 UNF-2B
7/8-14 UNF-2B
1 1/16-12 UN-2B
1 5/16-12 UN-2B
1 5/8-12 UN-2B
1 7/8-12 UN-2B
1) The tightening torques for the threaded plugs are valid for the condition "dry" and "lightly oiled".
2) The tightening torques for the threaded plugs are valid for the condition "dry" – in the condition "lightly oiled", the tightening torques
for M10 × 1 are reduced to 10 Nm and for M12 × 1.5 to 17 Nm.
Procedure
Bosch Rexroth AG, A4VG Series 32, RE 92003-01-B/12.2015
Maximum permissible
tightening torque of the
female threads M
G max
10 Nm
30 Nm
50 Nm
80 Nm
100 Nm
140 Nm
210 Nm
230 Nm
330 Nm
540 Nm
720 Nm
900 Nm
10 Nm
20 Nm
40 Nm
80 Nm
160 Nm
240 Nm
360 Nm
540 Nm
960 Nm
1200 Nm
To connect the axial piston unit to the hydraulic system:
1. Remove the protective plugs and threaded plugs at the ports at which the
connections are to be made according to the hydraulic circuit diagram.
2.
Make sure that the sealing surfaces of the hydraulic ports and functional surfaces
are not damaged.
3. Use only clean hydraulic lines or flush them before installation. (Observe
chapter 7.5 "Performing flushing cycle" on page 47 when you flush out the
entire system.)
4.
Connect the lines in accordance with the installation drawing and the machine or
system circuit diagram. Check whether all ports are connected or plugged with
threaded plugs.
5.
Tighten the fittings correctly (note tightening torques). Mark all correctly
tightened fittings, e.g., with a permanent marker.
6. Check all pipes and hose lines and every combination of connecting pieces,
couplings or connecting points with hoses or pipes to ensure they are in
condition for safe working.
For relationship between direction of rotation and flow direction, please refer to
data sheet 92003.
Required tightening torque
of the threaded plugs M
V
7 Nm 1)
15 Nm 2)
25 Nm 2)
35 Nm 1)
50 Nm 1)
60 Nm 1)
80 Nm 1)
120 Nm 1)
135 Nm 1)
225 Nm 1)
360 Nm
1)
400 Nm
1)
7 Nm
10 Nm
18 Nm
35 Nm
70 Nm
110 Nm
170 Nm
270 Nm
320 Nm
390 Nm
wAF hexagon socket
of the threaded plugs
3 mm
5 mm
6 mm
6 mm
8 mm
8 mm
10 mm
12 mm
12 mm
17 mm
22 mm
24 mm
1/8 in
5/32 in
3/16 in
1/4 in
5/16 in
3/8 in
9/16 in
5/8 in
3/4 in
3/4 in